Background
Ōyama was born on October 6, 1917, the second son of Duke Kashiwa Ōyama, who was the second son of Ōyama Iwao.
大山 桂
Ōyama was born on October 6, 1917, the second son of Duke Kashiwa Ōyama, who was the second son of Ōyama Iwao.
He graduated from the Department of Zoology, Tokyo Imperial University in 1941, and in the following year took up an assistant position in the Natural Resources Institute (資源化学研究所) of the Interior Ministry. Ōyama received his Doctor of Philosophy in 1955, and almost immediately left for a period of postdoctoral research with Doctor Myra Keen at Stanford University in California that lasted until April 1957.
In July 1944, Ōyama moved to the Imperial Navy"s Macassar Research Institute in present-day Indonesia, working as a researcher until the Institute"s dissolution in May, 1946. Thereafter he returned to Tokyo and resumed his position at the Natural Resources Institute. In 1947, he took up a concurrent position at the Geological Survey of Japan.
In 1979, Ōyama retired from the Geological Survey and founded a research laboratory at Toba Aquarium in Mie, also housing his vast library of paleontological and malacological literature.
A lifelong bachelor, Ōyama was fluent in English and French. Like many of his contemporaries, he insisted on his name being cited in English using its Kunrei transliteration "Katura".
Following his death this was held in storage at Toba Aquarium for many years, before being transferred to the Osaka Museum of Natural History at Nagai Park in 2013.
He was a co-founder (in 1928) of the Malacological Society of Japan, and attended its annual meetings until 1994. Ōyama built up a massive personal library of books and papers on Paleontology and Malacology that included many major nineteenth-century western works and a substantial body of Russian literature.
He was latterly a frequent guest at the monthly meetings of the Hanshin Shell Club in Nishinomiya, Hyōgo Prefecture, together with other former members of Tetsuaki Kira"s post-war Tengu-kai club
